Process of producing a decorative glass container



Patented Aug. 19, 1952 PROCESS OF PRODUCING A DECORATIVE GLASS CONTAINER Reinhard Habcrmaier, Toledo, Ohio, assignor to The De Vilbiss Company, Toledo, Ohio, a corporation of Ohio NoDrawing. Application April 28, 1949, Serial No. 90,269

3 Claims. 1

This invention relates broadly to a method of decorating glassware, and more particularly to the production of a glass container having a gold crackle finish.

The primary object of the invention is to provide a method of producing such decorated glassware that is commercially practical and consistent in results.

Another object of the invention is a method of producing such decorated glass articles which are particularly suited for contaning perfumes or other liquids including solvents or other ingredients which have deleterious effect upon decorative finishes. When such a finish disintegrates under the effect of perfume, the latter is likely to be contaminated.

In carrying out my invention I first secure a bottle of clear glass which has a crackle finish. This finish is formed by deliberate crazing. The minute cracks are smoothed over by a limited firing.

A coating of glassluster, a solution of mineral pigments in organic solvents, is spray applied to the exterior of the bottle. An amber color is desirable. A luster containing iron and bismuth as pigments in a ratio of approximately F6203 to 4 BlzOs has been found to give very satisfactory results.

After the coated bottle has been allowed to dry completely in a dust free location, it is placed in a kiln for firing. Heat of at least 540 centigrade is required.

An activating solution of muriate of tin isnext poured into the bottle. This prepares the surface for adherence of the subsequent mirror coating. After the activating step the bottle is rinsed with distilled water and the bottle filled with the silvering solution. Thisis a standard combination of silver nitrate, Rochelle salts and tartaric acid. After the silver has been properly precipitated the spent solution is removed from the bottle and the latter is rinsed and dried.

A liquid form of carnauba wax is then used to momentarily fill the bottle. This leaves a protective film acting to bind the silver coating and of a nature to repel penetration of the silver coating by destructive elements of perfume or other liquids for which the container may be used.

The carnauba wax liquid compound is an emulsion formed by heating a mixture of 20 parts of carnauba wax, 3 parts of parafline wax, 3 parts of oleic acid and 4 parts of triethanolamine to a temperature of 240 F. and adding, slowly with constant stirring, to the above melted mixture a 2 boiling solution of borax, composed of 1 parts of borax to 46 parts of water. The final emulsion is strained through cheese cloth.

I The amber color of the exterior bottle coating coacts with the interior silver mirror to give a highly attractive reflective gold appearance.

The crackle adds a sparkling efiect as the threadlike cracks assume a brighter and lighteri-go1d hue than the balance of the surface.

From the foregoing, it will be evident that a novel process has been evolved by which a particularly attractive article is produced and one that it is fitted for use with perfume and other liquids without injury either to the decorative coating or to the liquids held within the container.

The invention is susceptible of various modifications of the preferred form herein set forth and it is not intended to limit the invention to such specific embodiment other than by the scope of the appended claims.

I claim as my invention:

1. The process of producing an ornamental container for an atomizer comprising spray coating the exterior of a clear crackle'glass container with an amber colored luster, firing said luster upon the container, and depositing upon the interior surface of the container a silver mirror coating, by filling said container with a standard silvering solution and precipitating silver therefrom upon the interior of the container.

'2. A process according to claim 1 in which as an additional step a film of wax is applied to the back of the mirror coating by pouring the wax in liquid form into and from the container.

3. A process according to claim 1 in which as an additional step a film of carnauba wax is applied to the back of the mirror coating by pouring into the container a liquid carnauba wax and subsequently emptying said liquid wax from the container.

REINHARD I-IABERMAIER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 3,702 Drayton Aug. 12', 1844. 1,747,704 Glaudel Feb. 18, 1930 1,954,353 Ernst Apr. 10, 1934 2,021,152 Neuhaus Nov. 19, 1935 

1. THE PROCESS OF PRODUCING AN ORNAMENTAL CONTAINER FOR AN ATOMIZER COMPRISING SPRAY COATING THE EXTERIOR OF A CLEAR CRACKLE GLASS CONTAINER WITH AN AMBER COLORED LUSTER, FIRING SAID LUSTER UPON THE CONTAINER, AND DEPOSITING UPON THE INTERIOR SURFACE OF THE CONTAINER A SILVER MIRROR COATING, BY FILLING SAID CONTAINER WITH A STANDARD SILVERING SOLUTION AND PRECIPITATING SILVER THEREFROM UPON THE INTERIOR OF THE CONTAINER. 